Changing between wet and dry cargoes
What is being checked
The inspector is checking whether the vessel's arrangements for conversion between liquid and dry-bulk cargo service are planned, understood and executed using vessel-specific limits, verified line-up, effective communication and traceable records.
Ready onboard
0/6 completePractice questions
Answer aloud, then open the preparation point.
1What are the critical controls for conversion between liquid and dry-bulk cargo service?
Explain the vessel-specific sequence, limits and safeguards for cleaning standard, gas freeing, sludge and scale removal, piping and bilge segregation, hatch and hold readiness, contamination control and survey requirements.
2How was the line-up independently verified?
Identify both verifiers, the physical route checked, valve-position confirmation and the record completed before starting.
3What conditions require the operation to stop?
Stop for loss of communication, unexpected pressure or level, leakage, alarm, incorrect line-up or any of these specific failures: hydrocarbon residue, unsafe atmosphere, contaminated bilge, unblanked line, coating damage, cargo contamination or missing survey.
4Show the most recent complete operation.
Trace the plan through conversion plan, tank or hold inspection, gas-free records, cleaning and disposal records and survey or class documentation, including any deviation and its authorisation.
5What is the first response to an abnormal condition?
Stop or stabilise the operation, raise the alarm, isolate the source where safe, verify tank and system condition and coordinate with the terminal and Master.
Where an observation may arise
The vessel procedure did not adequately address cleaning standard, gas freeing, sludge and scale removal, piping and bilge segregation, hatch and hold readiness, contamination control and survey requirements.
The plan was copied or did not reflect the actual cargo, tank condition, terminal limits or equipment status.
A critical valve or connection was not independently checked, or the recorded position conflicted with the physical system.
Responsible personnel could not explain their limits, monitoring duty, communications or stop-work authority.
The plan, log or checklist could not be reconciled with conversion plan, tank or hold inspection, gas-free records, cleaning and disposal records and survey or class documentation.
The response did not adequately control hydrocarbon residue, unsafe atmosphere, contaminated bilge, unblanked line, coating damage, cargo contamination or missing survey.
Master's practical note
Use the latest real operation, not a model checklist. Follow one critical parameter from the agreed plan to the CCR display, deck condition and final record.
Equipment boundary and references
Equipment boundary: Apply the vessel's approved cargo manuals, cargo-specific data, terminal agreement and company limits. Do not operate cargo equipment solely to demonstrate it during an inspection.
References
- OCIMF SIRE 2.0 Question Library Part 2, Version 1.0, Question 8.8.2
- IMO IMSBC Code
- OCIMF ISGOTT, Sixth Edition
- MARPOL Annex I
Last reviewed: 2026-09-14